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// Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#import <Cocoa/Cocoa.h>
#include "app/gfx/canvas.h"
#include "app/gfx/font.h"
#include "app/l10n_util.h"
#include "base/gfx/rect.h"
#include "base/scoped_cftyperef.h"
#include "base/sys_string_conversions.h"
#include "third_party/skia/include/core/SkShader.h"
namespace gfx {
Canvas::Canvas(int width, int height, bool is_opaque)
: skia::PlatformCanvas(width, height, is_opaque) {
}
Canvas::Canvas() : skia::PlatformCanvas() {
}
Canvas::~Canvas() {
}
// static
void Canvas::SizeStringInt(const std::wstring& text,
const gfx::Font& font,
int *width, int *height, int flags) {
*width = font.GetStringWidth(text);
*height = font.height();
}
void Canvas::DrawStringInt(const std::wstring& text, const gfx::Font& font,
const SkColor& color, int x, int y, int w, int h,
int flags) {
if (!IntersectsClipRectInt(x, y, w, h))
return;
CGContextRef context = beginPlatformPaint();
CGContextSaveGState(context);
NSColor* ns_color = [NSColor colorWithDeviceRed:SkColorGetR(color) / 255.0
green:SkColorGetG(color) / 255.0
blue:SkColorGetB(color) / 255.0
alpha:1.0];
NSMutableParagraphStyle *ns_style =
[[[NSParagraphStyle alloc] init] autorelease];
if (flags & TEXT_ALIGN_CENTER)
[ns_style setAlignment:NSCenterTextAlignment];
// TODO(awalker): Implement the rest of the Canvas text flags
NSDictionary* attributes =
[NSDictionary dictionaryWithObjectsAndKeys:
font.nativeFont(), NSFontAttributeName,
ns_color, NSForegroundColorAttributeName,
ns_style, NSParagraphStyleAttributeName,
nil];
NSAttributedString* ns_string =
[[[NSAttributedString alloc] initWithString:base::SysWideToNSString(text)
attributes:attributes] autorelease];
scoped_cftyperef<CTFramesetterRef> framesetter(
CTFramesetterCreateWithAttributedString(reinterpret_cast<CFAttributedStringRef>(ns_string)));
CGRect text_bounds = CGRectMake(x, y, w, h);
CGMutablePathRef path = CGPathCreateMutable();
CGPathAddRect(path, NULL, text_bounds);
scoped_cftyperef<CTFrameRef> frame(
CTFramesetterCreateFrame(framesetter, CFRangeMake(0, 0), path, NULL));
CTFrameDraw(frame, context);
CGContextRestoreGState(context);
endPlatformPaint();
}
} // namespace gfx
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